單項(xiàng)選擇題Temporary seizings on wire rope are made with().

A.marline
B.sail twine
C.tape
D.wire


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2.單項(xiàng)選擇題Stuffer-braid rope has().

A.a yarn core
B.no core
C.three strands
D.12 threads

3.單項(xiàng)選擇題Serving is().

A.marline or ratline wound along the grooves of a rope
B.narrow strips of light canvas or cotton cloth spiral-wrapped along the rope
C.marline tightly wound on the rope by means of a board or mallet
D.a splice made by laying the strand of one rope into the vacated grooves of another rope

4.單項(xiàng)選擇題Separating both blocks of a tackle to prepare it for reuse is called().

A.chockablocking
B.fleeting
C.overhauling
D.two blocking

5.單項(xiàng)選擇題opes or wires attached to derricks to prevent them from swinging during cargo handling operations are().

A.Preventers
B.Side ropes
C.Stays
D.Guide lines